2011/08/31 by A. Gehrmann–De Ridder, Aude Gehrmann-De Ridder, Mathias Ritzmann +1
Mathematics · Physics and Astronomy · #Dipole #Event generator #Fermion #Formalism (music) #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Logarithm #Mathematical analysis #Mathematics #Observable #Particle physics #Particle physics theoretical and experimental studies #Phase space #Physics #Polarization (electrochemistry) #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #hep-ph
paper · pdf · doi:10.1103/physrevd.85.014013
50 pages; v3: corrected typo in eq.(35)
openalex publication_date 2012/01/12 · arxiv created 2018/11/21 · arxiv updated 2018/11/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a complete formalism for final-state (timelike) dipole-antenna showers including fermion masses, but neglecting polarization and finite-width effects. We make several comparisons of tree-level expansions of this shower algorithm to fixed-order matrix elements for hadronic Z decays, up to and including Z\ensuremath→6 partons, to which the algorithm can be consistently matched over all of phase space. We also compare to analytical resummations at the next-to-leading logarithmic (NLL) level. The shower algorithm has been implemented in the publicly available VINCIA plug-in to the PYTHIA 8 event generator, which enables us to compare to experimental data at the fully hadronized level. We therefore also include comparisons to selected observables in b-tagged Z decays.